It is a new crash signature on Mac OS X 64-bit. It is #5 top crasher on Mac OS X in 4.0b8pre for the last week. Signature JSC::X86Assembler::linkJump UUID 8cefa80b-2980-4cd7-aa52-bdfbf2101112 Time 2010-11-12 15:53:26.215782 Uptime 2322 Last Crash 3821 seconds (1.1 hours) before submission Install Age 4062 seconds (1.1 hours) since version was first installed. Product Firefox Version 4.0b8pre Build ID 20101112033839 Branch 2.0 OS Mac OS X OS Version 10.6.4 10F569 CPU amd64 CPU Info family 6 model 37 stepping 5 Crash Reason EXC_BAD_ACCESS / KERN_INVALID_ADDRESS Crash Address 0xc0de User Comments App Notes Renderers: 0x22600,0x20400 Processor Notes EMCheckCompatibility False Crashing Thread Frame Module Signature [Expand] Source 0 XUL JSC::X86Assembler::linkJump js/src/assembler/assembler/X86Assembler.h:2258 1 XUL ScopeNameCompiler::generateGlobalStub js/src/assembler/assembler/AbstractMacroAssembler.h:525 2 XUL js::mjit::ic::Name js/src/methodjit/PolyIC.cpp:1437 3 @0x106e9c0d0 4 XUL js::mjit::EnterMethodJIT js/src/methodjit/MethodJIT.cpp:745 5 XUL array_extra js/src/jsinterpinlines.h:598 6 XUL CallCompiler::generateNativeStub js/src/jscntxtinlines.h:684 7 XUL js::mjit::ic::NativeCall js/src/methodjit/MonoIC.cpp:873 8 @0x11c7560b2 9 XUL js::mjit::JaegerShot js/src/methodjit/MethodJIT.cpp:745 10 XUL js::Invoke js/src/jsinterp.cpp:653 11 XUL js::ExternalInvoke js/src/jsinterp.cpp:853 12 XUL JS_CallFunctionValue js/src/jsinterp.h:954 13 XUL nsXPCWrappedJSClass::CallMethod js/src/xpconnect/src/xpcwrappedjsclass.cpp:1694 14 XUL PrepareAndDispatch xpcom/reflect/xptcall/src/md/unix/xptcstubs_x86_64_darwin.cpp:153 15 XUL XUL@0xdd96da 16 XUL nsBrowserStatusFilter::OnStateChange toolkit/components/statusfilter/nsBrowserStatusFilter.cpp:183 17 XUL nsDocLoader::FireOnStateChange uriloader/base/nsDocLoader.cpp:1334 18 XUL nsDocLoader::FireOnStateChange uriloader/base/nsDocLoader.cpp:1341 19 XUL nsDocLoader::FireOnStateChange uriloader/base/nsDocLoader.cpp:1341 20 XUL nsDocLoader::OnStartRequest uriloader/base/nsDocLoader.cpp:851 21 XUL nsLoadGroup::AddRequest netwerk/base/src/nsLoadGroup.cpp:595 22 XUL nsBaseChannel::AsyncOpen netwerk/base/src/nsBaseChannel.cpp:607 23 XUL nsURILoader::OpenURI uriloader/base/nsURILoader.cpp:863 24 XUL nsDocShell::DoChannelLoad docshell/base/nsDocShell.cpp:8949 25 XUL nsDocShell::DoURILoad docshell/base/nsDocShell.cpp:8791 26 XUL nsDocShell::InternalLoad docshell/base/nsDocShell.cpp:8454 27 XUL nsDocShell::LoadURI docshell/base/nsDocShell.cpp:1421 28 XUL nsFrameLoader::ReallyStartLoadingInternal content/base/src/nsFrameLoader.cpp:336 29 XUL nsFrameLoader::ReallyStartLoading content/base/src/nsFrameLoader.cpp:275 30 XUL nsDocument::MaybeInitializeFinalizeFrameLoaders content/base/src/nsDocument.cpp:5460 31 XUL nsDocument::EndUpdate content/base/src/nsDocument.cpp:3980 32 XUL nsHTMLDocument::EndUpdate content/html/document/src/nsHTMLDocument.cpp:2938 33 XUL nsINode::ReplaceOrInsertBefore content/base/src/mozAutoDocUpdate.h:112 34 XUL nsIDOMNode_AppendChild nsINode.h:1222 35 XUL CallCompiler::generateNativeStub js/src/jscntxtinlines.h:684 36 XUL js::mjit::ic::NativeCall js/src/methodjit/MonoIC.cpp:873 37 @0x198a269a4 38 XUL js::mjit::JaegerShot js/src/methodjit/MethodJIT.cpp:745 39 XUL js::Invoke js/src/jsinterp.cpp:653 40 XUL js::ExternalInvoke js/src/jsinterp.cpp:853 41 XUL JS_CallFunctionValue js/src/jsinterp.h:954 42 XUL nsJSContext::CallEventHandler dom/base/nsJSEnvironment.cpp:2171 43 XUL nsGlobalWindow::RunTimeout dom/base/nsGlobalWindow.cpp:8916 44 XUL nsGlobalWindow::TimerCallback dom/base/nsGlobalWindow.cpp:9261 45 XUL nsTimerImpl::Fire xpcom/threads/nsTimerImpl.cpp:425 46 XUL nsTimerEvent::Run xpcom/threads/nsTimerImpl.cpp:517 47 XUL nsThread::ProcessNextEvent xpcom/threads/nsThread.cpp:609 48 XUL NS_ProcessPendingEvents_P nsThreadUtils.cpp:200 49 XUL nsBaseAppShell::NativeEventCallback widget/src/xpwidgets/nsBaseAppShell.cpp:131 50 XUL nsAppShell::ProcessGeckoEvents widget/src/cocoa/nsAppShell.mm:399 51 CoreFoundation CoreFoundation@0x4de90 52 CoreFoundation CoreFoundation@0x4c088 More reports at: http://crash-stats.mozilla.com/report/list?range_value=4&range_unit=weeks&signature=JSC%3A%3AX86Assembler%3A%3AlinkJump&version=Firefox%3A4.0b8pre